Portable microwave oven



FIG. 1 is a front, top and side perspective view of a portable microwave oven showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The electric cord shown broken away in FIGS. 1-6 is understood to represent indeterminate length. 

The ornamental design for a portable microwave oven, as shown and described. 